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[Anders Logg <question125106@xxxxxxxxxxxxxxxxxxxxx>]

Question #125106 on DOLFIN changed:
https://answers.launchpad.net/dolfin/+question/125106

Anders Logg posted a new comment:
On Sun, Sep 12, 2010 at 10:32:55PM -0700, Johan Hake wrote:
> On Sunday September 12 2010 09:27:26 Anders Logg wrote:
> > Question #125106 on DOLFIN changed:
> > https://answers.launchpad.net/dolfin/+question/125106
> >
> > Anders Logg posted a new comment:
> > I think your problem is the way you call the Expression constructor:
> >
> >   Expression(1)
> >
> > This creates a vector-valued expression (with only one component).
> >
> > Try with Expression() and it should work.
>
> It looked like this helped. But why are a Vector expression with only one
> value different from a scalar expression?

Because we have value_rank() and value_dimension(i), and checking for
value_dimension[0] == 1 would be a special case.

--
Anders

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